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Questions and Answers
What is another name for myopia?
What is another name for myopia?
- Astigmatism
- Hypermetropia
- Near-sightedness (correct)
- Presbyopia
In myopia, where is the image of a distant object formed in the eye?
In myopia, where is the image of a distant object formed in the eye?
- Behind the retina (correct)
- At the back of the eye lens
- On the retina
- At the far point
What type of lens can be used to correct myopia?
What type of lens can be used to correct myopia?
- Cylindrical lens
- Plano-concave lens (correct)
- Bifocal lens
- Convex lens
How does myopia affect a person's ability to see objects at different distances?
How does myopia affect a person's ability to see objects at different distances?
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What can cause myopia to develop in an individual?
What can cause myopia to develop in an individual?
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Study Notes
Myopia (Nearsightedness)
- Myopia is a defect in which a person can see nearby objects clearly but cannot see distant objects distinctly.
- In a myopic eye, the far point is nearer than infinity, and the person may see clearly up to a distance of a few meters.
- The image of a distant object is formed in front of the retina, not at the retina itself.
- Myopia can arise due to:
- Excessive curvature of the eye lens
- Elongation of the eyeball
- This defect can be corrected by using a concave lens of suitable power.
- A concave lens of suitable power will bring the image back onto the retina, thus correcting the defect.
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Description
Learn about myopia, also known as near-sightedness, and how it affects vision. Understand the causes of myopia and how the eye lens curvature or elongation can lead to this vision defect.
